Items

Limits

Appearance

White crystalline powder

Identification

A.Infrared Absorption

B.Ultraviolet Absorption

C.A solution(1 in 100)responds to the tests for Chloride

Assay

98.00%-102.00% min.

Melting Point

254.0-260.0℃

Loss on drying

0.50%  max

PH  

5.0-6.5

Residue on ignition

0.20%  max

Ordinary   impurities

Pass 

Total   impurities

Not more than 2.0%

Alcohol 

Not more than 300ppm